Nissan GT-R. Instruction — part 162
HAC-10
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
AUTOMATIC AIR CONDITIONER SYSTEM
Ambient sensor
—
A/C auto amp.
—
Blower motor
—
Magnet clutch
—
ECV
—
Intake door motor
—
Intake sensor
—
In-vehicle sensor
—
Mode door motor
—
Preset switch
The preset switch integrated with the controller for A/C operation
and AV switch is installed to the center of the instrument panel.
The operation and the display data of the preset switch are com-
municated with the A/C auto amp. through AV control unit via
CAN communication.
Refrigerant pressure sensor
—
Sunload sensor
—
Component
Reference
MODE DOOR CONTROL SYSTEM
HAC-11
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
MODE DOOR CONTROL SYSTEM
System Diagram
INFOID:0000000009163973
System Description
INFOID:0000000009163974
The mode door is automatically controlled by the temperature setting, ambient temperature, in-vehicle temper-
ature, intake temperature and amount of sunload.
SYSTEM OPERATION
• The A/C auto amp. receives data from each of the sensors.
• The A/C auto amp. sends air mix door, mode door and intake door opening angle data to the air mix door
motor LCUs, mode door motor LCU and intake door motor LCU.
• The air mix door motors, mode door motor and intake door motor read their respective signals according to
the address signal. Opening angle indication signals received from the A/C auto amp. and each of the motor
position sensors are compared by the LCUs in each door motor with the existing decision and opening
angles.
• Subsequently, HOT/COLD, DEF/VENT and FRE/REC operation is selected. The new selection data are
returned to the A/C auto amp.
Door Motor Circuit
MODE DOOR CONTROL SPECIFICATION
JSIIA1543GB
JSIIA1133GB
HAC-12
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
MODE DOOR CONTROL SYSTEM
• The air outlet can be selected instructionly by pressing the MODE
switch or the DEF switch of preset switch. The air outlet can be
fixed.
• The automatic control by A/C auto amp. is available by pressing
the AUTO switch.
• Select the mode door position (VENT, B/L, FOOT, D/F) according
to the air flow temperature calculated by the A/C auto amp. based
on the target air mix door position and sunload amount at the air
outlet automatic control.
JSIIA1334GB
AIR MIX DOOR CONTROL SYSTEM
HAC-13
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
AIR MIX DOOR CONTROL SYSTEM
System Diagram
INFOID:0000000009163975
System Description
INFOID:0000000009163976
The air mix door is automatically controlled so that in-vehicle temperature is maintained at a predetermined
value by the temperature setting, ambient temperature, in-vehicle temperature and amount of sunload.
SYSTEM OPERATION
• The A/C auto amp. receives data from each of the sensors.
• The A/C auto amp. sends air mix doors, mode door and intake door opening angle data to the air mix door
motor LCUs, mode door motor LCU and intake door motor LCU.
• The air mix door motors, mode door motor and intake door motor read their respective signals according to
the address signal. Opening angle indication signals received from the A/C auto amp. and each of the motor
position sensors are compared by the LCUs in each door motor with the existing decision and opening
angles.
• Subsequently, HOT/COLD, DEF/VENT and FRE/REC operation is selected. The new selection data are
returned to the A/C auto amp.
Door Motor Circuit
AIR MIX DOOR CONTROL SPECIFICATION
JSIIA1545GB
JSIIA1133GB
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